Switch to standard integer types in chrome/browser/, part 4 of 4.

chrome/browser/supervised_user/supervised_user_bookmarks_handler_unittest.cc

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
+#include <stddef.h>
+
 #include <iostream>
 #include <map>
 #include <string>
 #include <vector>
 
 #include "base/json/json_reader.h"
 #include "base/json/json_writer.h"
 #include "base/macros.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/values.h"
@@ skipping 298 matching lines @@
 TEST_F(SupervisedUserBookmarksHandlerTest, Circle) {
   // Make some fake settings which include a circular reference in the folders.
   scoped_ptr<base::DictionaryValue> settings(
       CreateSettings(CreateLinkDictionary(),
                      CreateFolderDictionaryWithCircle()));
   scoped_ptr<base::ListValue> bookmarks(
       SupervisedUserBookmarksHandler::BuildBookmarksTree(*settings.get()));
   // Don't care what exactly the result looks like, just that we don't run into
   // an endless loop.
 }